Young Buck started his rap career with a ton of promise, but his legal problems thwarted that potential and his woes continue to mount. According to reports, the former G-Unit MC is looking at an 18-month prison stint for gun possession.

The Tennessee rap star has agreed to a plea deal with Nashville prosecutors that will land him behind bars for a year and half, TMZ reported on Tuesday (May 22). A judge signed off on the plea, but Buck won't be sentenced formally until July 13.

"I got to go to the penitentiary in two months," Buck said in a personal video posted online over the weekend. "F--- with me for real, hold me down — and when I get out of the penitentiary, all you rap n---as better get the f--- out the way. I ain't even gonna say no names, but it's a good thing I'm about to go to the penitentiary."

After an IRS raid on Buck's Nashville home in 2010, authorities found a .40 caliber Glock 22 as well as ammunition. The raid followed reports that the rapper had an outstanding $300,000 tax debt, and because he's a convicted felon, Buck is prohibited from possessing any firearms. Back in 2005, he pleaded no contest to assault with a chance to produce bodily injury after he stabbed a man while trying to defend Dr. Dre at the 2004 Vibe Awards.

Buck rose to fame as a member of 50 Cent's G-Unit crew. In 2004, his debut, Straight Outta Cashville, went platinum; he followed that up with 2007's sophomore effort, Buck the World. But by '08, Young Buck had gotten himself kicked out of the group after tension between him and label boss 50. The MC has been releasing mixtape material on and off ever since, including The Rehab, an independent street album.